Epitaxial Crystallization of sPP on the (100) Lattice Plane of HDPE Crystals

Abstract

Abstract: Crystallization behavior of syndiotactic polypropylene(sPP) on the (100) lattice plane of high-density polyethylene(HDPE) crystals was studied by means of transmission electron microscopy and electron diffraction. The results indicate that sPPcrystals can grow epitaxially on the (100) PElattice plane with their chain directions ±37° apart from the chain direction of the HDPEsubstrate. The contact planes are (100) lattice planes for both polymers. This kind of epitaxy is explained in terms of parallel alignment of HDPEchains along the rows formed by the {CH₃,CH₂,CH₃} groups in the (100) lattice plane of the sPPcrystals. This implies that in the epitaxial crystallization of sPPwith fiber oriented HDPEsubstrate, not only the (110) but also the (100) HDPE lattice planes can act as the oriented nucleation sites. Furthermore, according to the poor matching between HDPEchains in the (100) lattice plane and the {CH₃,CH₂,CH₃} group rows in the (100) lattice plane of the sPPcrystals, it is concluded that the geometric matching is not the only controlling factor for the occurrence of polymer epitaxy.

Key words: sPP, HDPE, Epitaxial crystallization, Morphology

CLC Number:

O631

TrendMD:

YAN Shou-Ke, YANG De-Cai, Petermann J. . Epitaxial Crystallization of sPP on the (100) Lattice Plane of HDPE Crystals[J]. Chem. J. Chinese Universities, 1998, 19(6): 973.

[1]	ZHANG Zhibo, SHANG Han, XU Wenxuan, HAN Guangdong, CUI Jinsheng, YANG Haoran, LI Ruixin, ZHANG Shenghui, XU Huan. Self-Assembly of Graphene Oxide at Poly（3-hydroxybutyrate） Microparticles Toward High-performance Intercalated Nanocomposites [J]. Chem. J. Chinese Universities, 2022, 43(2): 20210566.
[2]	XU Huan, KE Lyu, TANG Mengke, SHANG Han, XU Wenxuan, ZHANG Zilin, FU Yanan, HAN Guangdong, CUI Jinsheng, YANG Haoran, GAO Jiefeng, ZHANG Shenghui, HE Xinjian. In⁃situ Liquid Exfoliation of Montmorillonite Nanosheets in Poly（lactic acid） to Resist Oxygen Permeation [J]. Chem. J. Chinese Universities, 2022, 43(11): 20220316.
[3]	WANG Ye, ZHANG Xiaosi, SUN Lijing, LI Bing, LIU Lin, YANG Miao, TIAN Peng, LIU Zhongyi, LIU Zhongmin. Morphology Control of SAPO Molecular Sieves under the Assistance of Organosilane [J]. Chem. J. Chinese Universities, 2021, 42(3): 683.
[4]	MIAO Weijun, WU Feng, WANG Yong, WANG Zongbao. In⁃situ Study of the Epitaxial Crystallization of PCL/RGO at High Shear Rate [J]. Chem. J. Chinese Universities, 2021, 42(3): 910.
[5]	LU Man,SONG Chunmei,WAN Bo. Thixotropic Behavior of Hydrophobically Modified Ethoxylated Urethane-thickened Waterborne Latex ^† [J]. Chem. J. Chinese Universities, 2020, 41(5): 1108.
[6]	WU Fengren,LIU Yongjia,LU Xuemin,ZHU Bangshang. Controllable Preparation of Polydopamine Modified Gold Nanoflowers and Its Application in Photothermal Therapy ^† [J]. Chem. J. Chinese Universities, 2020, 41(3): 465.
[7]	SHI Xiaoyu, WANG Songmeng, LIU Lingyan, CHANG Weixing, LI Jing. Controllable Synthesis of Amphiphilic Block Copolymer PMnEOS-b-PAA and co-Assembly Morphologies of PMDEOS-b-PAA/PS-b-PAA [J]. Chem. J. Chinese Universities, 2020, 41(11): 2545.
[8]	WANG Yue, GUO Xiaohong, ZHOU Guangdong, CHENG Tiexin. Effect of Alkyl Benzene Sulfonate Surfactant on Morphology and Structure of Calcium Silicate Hydrate ^† [J]. Chem. J. Chinese Universities, 2019, 40(9): 1795.
[9]	REN Wei, TIAN Ye, XING Lingli, YANG Yuexi, DING Tong, LI Xingang. K Promoted Nanosheets-like Hydrotalcite-derived CoAlO Metal Oxides for Catalytic Soot Combustion [J]. Chem. J. Chinese Universities, 2019, 40(8): 1670.
[10]	YANG Jinge, LI Yujie, LU Di, CHEN Yufang, SUN Weiwei, ZHENG Chunman. Morphology Control and Lithium Storage Performance of Micro/nano Li-rich Cathode Material^† [J]. Chem. J. Chinese Universities, 2019, 40(7): 1495.
[11]	HAN Ning, XIE Ruihong, WANG Xuena, LIU Shuxia. Morphology Modulation and Photocatalytic Performance of Microcrystal of Silver Salt of Ti-substituted Keggin-type Polyoxotungstate^† [J]. Chem. J. Chinese Universities, 2018, 39(7): 1378.
[12]	ZHANG Shupeng, CHENG Youxing, REN Lei, WEN Kai, LÜ Xiaolin, YE Shefang, ZHOU Xi. Reparation and Photothermal Properties of Prussian Blue Nanoparticles with Different Morphologies^† [J]. Chem. J. Chinese Universities, 2018, 39(2): 359.
[13]	LI Caixin, LIANG Xiaorong, GU Ju. Preparation and Characterization of Bagasse Nanocellulose^† [J]. Chem. J. Chinese Universities, 2017, 38(7): 1286.
[14]	LIU Jiawei, WANG Jianjiang, ZHAO Fang, XU Baocai. Electrospinning Preparation and Infrared-emissivity Properties of La_0.67Ba_0.33MnO₃ Micro/nanofibers [J]. Chem. J. Chinese Universities, 2017, 38(6): 929.
[15]	ZHAO Fang, WANG Jianjiang, XU Baocai, LIU Jiawei, GAO Haitao. Electrospinning Fabrication and Microwave Absorption Properties of Lithium Zinc Ferrite Micro/Nanofibers [J]. Chem. J. Chinese Universities, 2017, 38(6): 922.

Epitaxial Crystallization of sPP on the (100) Lattice Plane of HDPE Crystals

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments